公开(公告)号：US11625121B2

公开(公告)日：2023-04-11

申请号：US17693403

申请日：2022-03-13

Applicant: NOVATEK Microelectronics Corp.

Inventor： Yen-Cheng Cheng ,  Shih-Chan Huang

IPC: G06F3/041 ,  G06F3/044 ,  H04W72/04 ,  G06F3/038 ,  G06F3/0354

Abstract: A detection method for a touch device includes transmitting a first uplink signal conforming to a first protocol of a first active stylus and transmitting a second uplink signal conforming to a second protocol of a second active stylus. A chronological sequence of the first uplink signal and the second uplink signal is based at least in part on whether the first active stylus or the second active stylus has just left a detection range of the touch device.

公开(公告)号：US20220334701A1

公开(公告)日：2022-10-20

申请号：US17693403

申请日：2022-03-13

Applicant: NOVATEK Microelectronics Corp.

Inventor： Yen-Cheng Cheng ,  Shih-Chan Huang

IPC: G06F3/041 ,  G06F3/044 ,  G06F3/038 ,  G06F3/0354 ,  H04W72/04

Abstract: A detection method for a touch device includes transmitting a first uplink signal conforming to a first protocol of a first active stylus and transmitting a second uplink signal conforming to a second protocol of a second active stylus. A chronological sequence of the first uplink signal and the second uplink signal is based at least in part on whether the first active stylus or the second active stylus has just left a detection range of the touch device.

公开(公告)号：US12032781B1

公开(公告)日：2024-07-09

申请号：US18183893

申请日：2023-03-14

Applicant: Novatek Microelectronics Corp.

Inventor： Yen-Cheng Cheng ,  Ko Ho Lin ,  Shih-Chan Huang

IPC: G06F3/041 ,  G06F3/0354

CPC classification number: G06F3/04166 ,  G06F3/03545 ,  G06F3/04162

Abstract: The disclosure provides a touch device and an operation method thereof. A touch panel of the touch device is divided into a plurality of stylus connection areas. During a first discovery period, the stylus connection areas detect a stylus one by one in a first scan order. When the stylus is located in one of the stylus connection areas (a hit area), the first discovery period is ended to enter a normal period, and the hit area establishes a connection to the stylus. When the connection between the stylus and the touch panel is interrupted, the normal period is ended to enter a second discovery period, and the first scan order is adjusted to a second scan order according to the hit area in the normal period. During the second discovery period, the stylus connection areas detect the stylus one by one in the second scan order.